(a) The agency of this state or another state, or a party or other entity seeking to enforce a child support obligation, may, at any time after recording of a lien recorded under AS 25.27.230, serve a copy of the lien upon any person, political subdivision, or department of the state possessing earnings, or deposits or balances held in any bank account of any nature that are due, owing, or belonging to the obligor.
(b) A lien recorded under AS 25.27.230 shall be served upon a person, political subdivision, or department of the state personally or by registered, certified, or insured mail, return receipt requested.